单项选择题
A.immediately jump in the water to help the individual
B.call for help and keep the individual in sight
C.run to the radio room to send an emergency message
D.go to the control room for the distress flares
单项选择题 If an emergency pump control is used as the emergency shutdown on a tank vessel，it must（）.
单项选择题 How should you signal the crane operator to stop in an emergency?（）
单项选择题 Fire protection regulations for towing vessels require that drills be conducted on board the vessel as if there were an actual emergency. Drills include all of the following，EXCEPT（）.